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08-25-2019, 09:11 AM
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#1
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New Member
Join Date: Aug 2019
Location: Fort Worth
Posts: 9
M.O.C. #24764
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Montana Hydraulic Slide out Issue
I have a 2013 Montana 3900FB. The slide outs have worked for years but recently I had the rig in to fix a leveling issue that turned out to be the control panel. Several weeks later I went to extend the main living area slide outs and the LH slide moved without issue but the RH side would only move a few inches. The fuse tripped and reset so I activated the switch/pump again and the RH side moved another inch or two. When I released the switch, the residual pressure in system continued to move the RH slide out very slowly (jerky) no more than 1/2 inch. I continued to activate and release the switch about 20 times and eventually the slide out went full open. When I closed the slide-outs, the LH side moved first and closed normally but the RH side took 20 (or more) switch actuations to get the slide out closed. Bottom line is the leveling system works perfectly, the batteries and pump works fine, the fuse trip function works good, and the LH slide out works fine. Normally either the LH or RH slide out will move first depending on which one is easier to move probably depending on the level of the rig.
I don't mind taking it in for repair but any insight would be appreciated if anyone has seen this before. Thanks, Mark
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08-25-2019, 09:57 AM
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#2
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Montana Master
Join Date: Oct 2006
Location: McKinney
Posts: 7,207
M.O.C. #6433
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It is actually an "auto reset circuit breaker", not a fuse. And the undersized 50 amp auto reset circuit breaker has been a much discussed problem for many years. In general the fix has been to replace that 50 amp with an 80 amp. Lippert has even approved that modification.
But it seems that one slide may actually have a real problem. Typically the heaviest slide will tend to be the most problematic. But tripping at every half inch is really a lot. Tripping 4-5 times before complete extension or retraction is more the norm.
I guess if it were me, I would go ahead and replace the breaker with an 80 amp and see if it corrected the problem. Every time that breaker trips it burns the contacts a little more and makes the problem worse. If the 80 amp trips then you know you do have a slide problem.
Here is a pic of my old auto reset breaker.
__________________
Bill & Patricia
Riley, our Golden
2007 3075RL (recently sold, currently without)
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08-25-2019, 12:31 PM
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#3
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Montana Master
Join Date: Oct 2012
Location: Box Elder
Posts: 4,728
M.O.C. #12947
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This is the breaker I installed in our rig. I only replaced the breaker that goes to the hydraulic pump, left the other one alone. If, like on our rig, there are two cables leaving the load side of the old breaker, just install the cables the same way. The second cable is the one that feeds 12 volts to your main panel. You may have to enlarge the holes in the ring connectors because the posts on the new breaker are a bit larger in diameter than on the old breaker. I also show a photo of where our breaker is located. https://www.amazon.com/Bussmann-BP-C...t-video&sr=8-1
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Bob & Becky
2012 3402RL
2012 Chevy 2500HD D/A CC 4WD
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08-26-2019, 02:19 AM
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#4
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New Member
Join Date: Aug 2019
Location: Fort Worth
Posts: 9
M.O.C. #24764
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Thanks. That is good to know that Lippert approved the 80 Amp circuit breaker. I’ll get one ready to swap.
Cheers, Swish
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08-25-2019, 02:36 PM
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#5
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New Member
Join Date: Aug 2019
Location: Fort Worth
Posts: 9
M.O.C. #24764
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Thanks for the replies folks but it's not the breaker. I know this because of the way it used to operate. Sometimes the RH side would go first and now only the LH side moves and the RH will move slightly, load up and stop, and when I release the switch the slide out will move ever so slightly as the pressure dissipates. Now the one change that happened is they put a new control panel for the 6 point leveling system. Was there some sort of independent control of those slide outs on that panel???
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08-25-2019, 03:11 PM
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#6
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Montana Master
Join Date: Oct 2006
Location: McKinney
Posts: 7,207
M.O.C. #6433
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Could be something restricting fluid flow to or from that hydraulic cylinder. Do you have isolation valves to the slides to block a slide from moving? Could be the isolation valve is not fully open. Maybe a hydraulic line has somehow gotten pinched or crimped. Either of those could cause the pressurized fluid to slowly bleed thru and explain the creep.
At some point I would still replace that breaker. You can see by the picture how badly burned mine was after tripping a number of times.
__________________
Bill & Patricia
Riley, our Golden
2007 3075RL (recently sold, currently without)
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08-25-2019, 04:36 PM
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#7
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Montana Master
Join Date: Mar 2015
Location: Sequim
Posts: 538
M.O.C. #17176
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You may want to see if they turned the hydraulic off to slide there are manual knobs under level up controls.
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Dan & Sandy Huhn
2016 Montana 3720 2015 Chevy 3500 SWD Duro Max
Prev 2012 High Country 313RE 2012 Chevy 2500 DMax
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08-25-2019, 04:37 PM
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#8
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New Member
Join Date: Aug 2019
Location: Fort Worth
Posts: 9
M.O.C. #24764
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Bill & Patricia,
I'm going to look for those isolation valves again, I have not found them yet. I do have these control nobs called Hydraulic Room Control with one switch labelled DS (Drivers Side???) and the other called OCS (Opposite Control Side???) underneath where my Leveling Control panel is on the LH side of rig. The shop was in that area replacing the panel. I wonder...I should look there and see what I see. Thanks again!
Mark
2013 Montana 3900FB
2009 Dodge 3500
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08-25-2019, 04:44 PM
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#9
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Montana Master
Join Date: Mar 2015
Location: Sequim
Posts: 538
M.O.C. #17176
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Mark those are the ones I was thinking about just make sure there all on
__________________
Dan & Sandy Huhn
2016 Montana 3720 2015 Chevy 3500 SWD Duro Max
Prev 2012 High Country 313RE 2012 Chevy 2500 DMax
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08-26-2019, 02:14 AM
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#10
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New Member
Join Date: Aug 2019
Location: Fort Worth
Posts: 9
M.O.C. #24764
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Roger that. By the way I have a correction to my posts. The switches are DS & ODS and they stand for Door Side and Opposite Door Side. I won’t have results for a couple weeks until I get back home. (Up North at Mother I n laws house). Thanks, Swish
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08-26-2019, 07:53 AM
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#11
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Montana Master
Join Date: Oct 2006
Location: McKinney
Posts: 7,207
M.O.C. #6433
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Quote:
Originally Posted by Swish
Bill & Patricia,
........
. I do have these control nobs called Hydraulic Room Control with one switch labelled DS (Drivers Side???) and the other called OCS (Opposite Control Side???) underneath where my Leveling Control panel is on the LH side of rig................
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I still live in the dark ages with manual isolation valves on top of the pump. Are those control knobs on electric switches that operate electric solenoid isolation valves? Or are the knobs actually connected to manual hydraulic isolation valves behind the panel?
__________________
Bill & Patricia
Riley, our Golden
2007 3075RL (recently sold, currently without)
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08-26-2019, 09:29 AM
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#12
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Montana Master
Join Date: Oct 2015
Location: westminster md
Posts: 2,321
M.O.C. #17894
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Our unit has 4 slides and 4 knobs. One knob for each slide. The knobs control the flow of hydraulic fluid to each slide. In my case it is very rare to ever use them.
I don't think the OPs issues are hydraulic related. I think one of the 2 rails/mechanisms under the slide or something on one side is binding up.
__________________
2018 Chevy 3500 LTZ Dually Diesel 4x4 CCLB
2011 Montana 3455 SA. 6 point level up. Disc brakes. Curt Q24 Hitch. 5 step glow steps
Progressive EMS. Valterra tank valves. Sailun G637 tires. ARP fridge control. All led lighting. Mor Ryde IS
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08-26-2019, 10:09 AM
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#13
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New Member
Join Date: Aug 2019
Location: Fort Worth
Posts: 9
M.O.C. #24764
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Quote:
Originally Posted by beeje
Our unit has 4 slides and 4 knobs. One knob for each slide. The knobs control the flow of hydraulic fluid to each slide. In my case it is very rare to ever use them.
I don't think the OPs issues are hydraulic related. I think one of the 2 rails/mechanisms under the slide or something on one side is binding up.
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I appreciate the further insight. I opened and closed the slide outs (door side and Opposite door side) just before I towed here to the shop. Several weeks later I picked her up after they troubleshot and replaced my leveler controller which is right above my DS and ODS Hyd Flow Control Valves on the LH leveler panel. I brought her home and leveled her and then a couple weeks later I went to open both slides and that is when I noticed the issue. To me it's not binding as it doesn't move at all until the ODS side is full open. I will check that after I look closely to see what the shop has done to either the knobs or to the hyd lines to those valves. Thanks for sharing!
Mark
2013 Montana 3900FB
2009 Dodge 3500
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08-26-2019, 06:30 PM
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#14
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Montana Master
Join Date: Oct 2015
Location: westminster md
Posts: 2,321
M.O.C. #17894
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Your post provided a little more incite. In an all hydraulic slide unit (with one slide switch )the slides are all connected together. The slide with the least amount of resistance moves first (usually closest to the pump), then the next, then the next and so on.
My 4 slide unit will sometimes act differently depending how and where it is situated. This is how they usually work.
My bedroom slide always moves first until fully open, then the fireplace/tv slide moves around 1/2 way, then the stove/fridge slide starts to move and goes 1/2 way, then back to the fireplace/tv slide until it is fully open, then back to the stove/fridge slide till its fully open, then the dinning couch slide starts and continues until its fully open.
When closing, the bedroom closes first, then the tv starts to move along with the fridge slide, the tv closes first then the fridge, then the dinning starts to close.
Hope this helps you out as it is not always the same every time.
__________________
2018 Chevy 3500 LTZ Dually Diesel 4x4 CCLB
2011 Montana 3455 SA. 6 point level up. Disc brakes. Curt Q24 Hitch. 5 step glow steps
Progressive EMS. Valterra tank valves. Sailun G637 tires. ARP fridge control. All led lighting. Mor Ryde IS
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08-26-2019, 09:58 AM
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#15
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New Member
Join Date: Aug 2019
Location: Fort Worth
Posts: 9
M.O.C. #24764
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Quote:
Originally Posted by BB_TX
I still live in the dark ages with manual isolation valves on top of the pump. Are those control knobs on electric switches that operate electric solenoid isolation valves? Or are the knobs actually connected to manual hydraulic isolation valves behind the panel?
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I'm going to assume that they are not electrical, an electrical switch would be quite simply on and off. These controls act just like a hydraulic flow control knobs. I'll know for sure when I open up that panel in September when I get home. Recall that that area was the last area the shop was when they replaced my 6 point auto leveler control panel. No telling what they did when in there. I didn't have any idea what those knobs were for until this forum so I appreciate everyone who has helped me gain understanding
Mark
2013 Montana 3900FB
2009 Dodge 3500
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09-06-2019, 06:59 PM
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#16
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Montana Master
Join Date: May 2019
Location: Alton
Posts: 2,745
M.O.C. #24086
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I love this forum
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Daryl and Marianne,
2019 3130re 20th Anniversary Edition
2016 F350 Lariat
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